

VANCOUVER, British Columbia, March 19, 2026 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) is pleased to report the signing of a binding Letter or Intent (“LOI”) under which Mirasol grants San Lorenzo Gold Corp. (TSX-V: SLG) (OTC: SNLGF) (“San Lorenzo”) an exclusive option agreement (the “Option”) to acquire the mineral rights and landholdings within Mirasol`s 100% owned Rubi Copper Project (“Rubi”) located in Northern Chile.

VANCOUVER, British Columbia, Dec. 16, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) is pleased to announce the closing of the previously announced non-brokered private placement financing. The Company issued 6,689,445 units of securities (the “Units”) at a price of $0.45 per Unit for aggregate gross proceeds of $3,010,250.25 (the “Offering”). Each Unit is comprised of one (1) common share and one-half of one (1/2) non-transferable common share purchase warrant (the “Warrant”), with each whole Warrant entitling the holder to purchase one additional common share at a price of $0.60 for a period of twelve (12) months from closing of the Offering.

VANCOUVER, British Columbia, Dec. 09, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) is pleased to report it has completed the sale of Mirasol`s 100% owned Sascha Project (“Sascha”) located in Santa Cruz province, Argentina to Andara Mining Pty Ltd (“Andara Mining”), a subsidiary of Pursuit Minerals Ltd. (ASX: PUR) (“Pursuit Minerals”). The Company announced the sale on September 30, 2025. In connection to the sale, Mirasol has also assigned its Option to Purchase Agreement on the Marcelina Project (“Marcelina”) to Andara Mining. Under the Option to Purchase Agreement, Mirasol has the right to acquire an undivided 100% interest in three mineral concessions comprising the Marcelina Project. Sascha and Marcelina are together referred to as the Sascha-Marcelina Projects (“Sascha-Marcelina”).

VANCOUVER, British Columbia, Dec. 05, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) announces that Carmen Cazares has retired from her role as Chief Financial Officer (“CFO”) of the Company. The Company is also pleased to announce that Francisco Del Castillo, has assumed the role of CFO effective December 1, 2025.

VANCOUVER, British Columbia, Oct. 02, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) today announced it is arranging a non-brokered private placement financing (the “Offering”) of up to 6,666,667 Units (the “Units”) at a price of $0.45 per Unit for aggregate gross proceeds of $3.0 million. Each Unit will be comprised of one (1) common share and one-half of one (1/2) non-transferable common share purchase warrant (the “Warrant”), with each whole Warrant entitling the holder to purchase one additional common share at a price of $0.60 for a period of twelve (12) months from closing of the Offering.

VANCOUVER, British Columbia, Sept. 30, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) is pleased to report the signing of binding heads of agreement (“Agreement”) under which Mirasol grants Andara Mining Pty Ltd (“Andara Mining”) an exclusive right to acquire the mineral rights within Mirasol`s 100% owned Sascha Project located in Santa Cruz province, Argentina (“Sascha”). Mirasol has also agreed to assign to Andara Mining its Option to Purchase Agreement on the Marcelina Project (“Marcelina”). Sascha and Marcelina are together referred to as the Sascha-Marcelina Projects (“Sascha-Marcelina”). Under the Option to Purchase Agreement, Mirasol has the right to acquire an undivided 100% interest in three mineral concessions comprising the Marcelina Project.

VANCOUVER, British Columbia, Sept. 16, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) is pleased to announce that the geochemical soil survey and IP ground geophysics reinforce 46 South as a high-priority drill target on the central block of the Company's 100%-owned Sobek Copper-Gold-Silver Project (“Sobek” or “the Project”) in the Vicuña District of Chile . The grid-based soil survey outlined a prominent, large and coherent copper-gold-moly geochemical anomaly that coincidently overlays IP-PDP resistivity and chargeability responses from IP ground geophysics surveys completed late last season. Structurally controlled tourmaline breccias and hydrothermal breccias with porphyry-derived clasts were identified while prospecting and mapping in the target area. The 46 South target resides on the southern margin of a district-scale magnetic high where both the airborne MT and magnetics surveys outlined distinct cylindrical anomalies. To refine the maiden drill program at 46 South an innovative and proven geophysical system will be deployed to further delineate the geometry of both the shallow IP/Res domains and the deeper MT anomalies ahead of drilling.

VANCOUVER, British Columbia, July 15, 2025 (GLOBE NEWSWIRE) -- Mirasol Resources Ltd. (TSX-V: MRZ) (OTC: MRZLF) (the “Company” or “Mirasol”) is pleased to report the signing of Option to Purchase Agreements (“Agreement”) under which Mirasol grants Pampa Camarones SpA (BCS: CAMARONEX), through its affiliate Eco Earth Elements SpA, (“Eco Earth”) an exclusive right to acquire the mineral rights within Mirasol`s 100% owned Nord East and Nord West Projects (“Nord East”, “Nord West” or the “Nord Projects”) located in Region II of Chile. The Nord East and West Projects are directly adjacent to Pampa Camarones´ Ciclón-Exploradora development project, which is advancing to production, and will serve as key properties for the development of essential infrastructure, while also increasing potential resources and adding exploration upside.